Upgrading Fedora using package manager
This page contains information explaining how to upgrade Fedora online using `dnf` (without the xref:dnf-system-upgrade.adoc[DNF system upgrade plugin]).
This is not a supported upgrade method. Read xref:upgrading.adoc[Upgrading to a new release of Fedora] to see a list of supported and tested upgrade methods. The steps included in the guide are *at your own risk*.
Upgrading Fedora using dnf directly
If you are upgrading using link:https://fedoraproject.org/wiki/DNF[DNF] and it shows any general dependency issues, please file them in http://bugzilla.redhat.com[Bugzilla]. But please read this page, all references pages and search the mailing list archives before filing bugs. And of course, please help keep this page updated.
If you want to help make live upgrades work smoothly, join the link:SIGs/LiveUpgrade[Live Upgrade Special Interest Group].
Upgrading across multiple releases
If you need to upgrade across several releases, it is generally recommended to go one release at a time: for example, rather than going directly from Fedora 31 to Fedora 33, first go to Fedora 32 and then to Fedora 33. This tends to reduce the number of package dependency issues you may encounter. If you are upgrading from an link:End_of_life[End of life] release, please also see link:#eol[the end-of-life section].
Instructions to upgrade using dnf
1. Backup your system
Backup any personal data to an external hard drive or to another machine. If there is some unrecoverable error that requires a fresh install, you don't want to lose any data.
2. Read about common problems
Further down in this page there is a list of common problems specific to dnf upgrades for specific versions. Some of them require attention before the upgrade.
General advice on upgrading Fedora can be found on the link:https://docs.fedoraproject.org/en-US/quick-docs/upgrading/[Upgrading] page. You should also read the http://docs.fedoraproject.org/install-guide/[Installation Guide] and http://docs.fedoraproject.org/release-notes/[Release Notes] for the version you plan to upgrade to - they contain important information regarding upgrading issues. Finally, check the list of link:Common_bugs[Common bugs].
3. Clean Stuff
Review and remove all .rpmsave and .rpmnew files before and after upgrading. (And if you have selinux enabled then remember to check security context if you move config files around.)
*Find unused config files* + Merge and resolve the changes found by the following script: `dnf install rpmconf; rpmconf -a`. Now find and remove old config which nobody owns: `rpmconf -c`.
Now is a good time to remove packages you don't use - especially non-standard packages.
*Find and review "unused" packages* + You can find packages not required by other packages with the tool `package-cleanup` from the `dnf-utils` package: `dnf install dnf-utils; package-cleanup --leaves`.
These packages could be candidates for removal, but check to see whether you use them directly or if they are used by applications not backed by rpm packages. Remove them with `dnf remove package-name-and-version`.
Another useful tool for cleaning up unused packages is `rpmreaper`. It's an ncurses application that lets you view rpm dependency graph and mark packages for deletion. Marking one package can make other packages leaf, which you can see immediately, so you don't have to run the tool several times to get rid of a whole sub-tree unused packages. Install with `dnf install rpmreaper`.